python - 构建 OpenCV cmake 错误 : could NOT find PythonInterp

Question

为了构建 OpenCV，我在我的 ~/opencv/build 目录中的终端中运行了这个:

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/path/to/opencv-3.0.0/build -D PYTHON2_LIBRARY=/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/bin
-D PYTHON2_INCLUDE_DIR=/usr/local/Frameworks/Python.framework/Headers -D PYTHON2_PACKAGES_PATH=/usr/local/lib/python2.7/site-packages -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D OPENCV_EXTRA_MODULES_PATH=/path/to/opencv_contrib-3.0.0/modules ../

但无论发生什么，我都会在 Traceback 中看到这个错误:(Could NOT find PythonInterp:)

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: No module named numpy.distutils
-- Could NOT find PythonInterp: Found unsuitable version "2.7.11", 
but required is at least "3.4" (found /usr/local/bin/python)
-- Could NOT find PythonInterp: Found unsuitable version "2.7.11", 
but required is at least "3.2" (found /usr/local/bin/python)

再往下看，这会出现

-- 
--   Python 2:
--     Interpreter:                 /usr/local/bin/python2.7 (ver 2.7.11)
-- 
--   Python 3:
--     Interpreter:                 NO
-- 
--   Python (for build):            /usr/local/bin/python2.7
-- 
--   Java:
--     ant:                         NO
--     JNI:

正确的输出应该是这样的: correct Python Interp output

我已经尝试了所有方法，但是这个问题不断出现!本质上，我无法正确构建 OpenCV，因此无法正确安装它。

Answer 1

你的错误是关于找不到 numpy，所以安装 numpy:

pip install numpy

此外，更改您的包含目录以确保您确实包含了它。对于 PYTHON2_INCLUDE_DIR:

-D PYTHON2_INCLUDE_DIR=/usr/local/Frameworks/Python.framework/Headers

然后，运行make clean，删除你的/build目录，然后运行你的cmake，然后是make 再次。